Avoid "Invalid argument supplied for foreach()" error when checking $router_item['load_functions']

While using the "Search by Page" module to search users, each user that comes up throws a PHP warning:
warning: Invalid argument supplied for foreach() in /u/sites/keithferrazzi_dev/webroot/sites/all/modules/contrib/me/me.module on line 223.

On line 223, there is a foreach check:
foreach ($router_item['load_functions'] as $index => $function) { ... }

What this patch does is place that foreach inside of a if (is_array($router_item)) { .. } check.